Question

history of earth vocab quiz. match each vocabulary term to its correct definition.

• the preserved remains or traces of an organism that has been preserved in rock.
• the breakdown of a radioactive element, releasing particles and energy.
• a fossil used to date the rock layer in which it is found.
• the dying out, complete disappearance of a species.
• radioactive decay
• fossil
• extinction
• index fossil

Explanation:

• "The preserved remains or traces of an organism that has been preserved in rock" is the definition of Fossil.
• "The breakdown of a radioactive element, releasing particles and energy" is Radioactive Decay.
• "A fossil used to date the rock - layer in which it is found" is Index Fossil.
• "The dying out, complete disappearance of a species" is Extinction.

Answer:

• The preserved remains or traces of an organism that has been preserved in rock: Fossil
• The breakdown of a radioactive element, releasing particles and energy: Radioactive Decay
• A fossil used to date the rock - layer in which it is found: Index Fossil
• The dying out, complete disappearance of a species: Extinction